
\(\bullet \)  ActivityNet [1]} has two versions, v1.2 and v1.3. The former contains \(9,682\)  videos in 100 classes, while the latter, which is a superset of v1.2 and was used in the ActivityNet Challenge 2016, contains \(19,994\)  videos in 200 classes. In each version, the dataset is divided into three disjoint subsets, training, validation, and testing, by 2:1:1.
